Posts Tagged ‘aa’

The 1.2V AA 2800 mAh Fujicell NiMH batteries we test here are of the standard NiMH type and are rated pretty high at 2800 mAh (the company also makes LSD NiMH batteries that we are soon also going to test), so we were quite interested to see how these perform, especially considering that they are available at a good price. Now, before moving on to the tests we should clear something important, as some people associate the brand Fujicell with Fujifilm (Fuji), even though both companies have nothing to do with each other. Fujicell is not associated with Fujifilm, although both companies are Japanese and apparently are taking advantage of the popular Japanese Mount Fuji.

We have started the test of the 1.2V AA 2800 mAh Fujicell NiMH batteries as we normally do with a low constant current discharge rate of 0.2A and the result we got was 2532 mAh as capacity and while this is a bit shorter from the 2800 mAh rating it is still quite good performance for not a very popular and well known brand of batteries. Increasing the constant current load going all the way up to 2.0A we still manage to get very decent performance, meaning that they can handle well both high and low load applications. If Fujicell has provided a minimum guaranteed capacity rating of 2500 mAh for these batteries they would’ve met their specs, but now we can say that they fall short of the 2800 mAh rating by quite a bit and even the faster self discharge of higher capacity batteries is not a reason enough for such a difference.

The 1.2V AAA 900 mAh Turnigy LSD NiMH batteries are Low Self Discharge NiMHs as the name suggests, meaning they do loose less of their useable capacity over time compared to traditional NiMH batteries. Turnigy is a brand of one of the largest online RC model stores, namely Hobby King, so these batteries are often used for radio controlled models – for powering transmitters, receivers and even smaller scale models. The price of the Turnigy LSD NiMH batteries is more attractive compared to other similar products, but what about their performance, we are going to find out exactly that now.

We have started the test of the 1.2V AAA 900 mAh Turnigy LSD NiMH batteries as we normally do with a low constant current discharge rate of 0.1A and getting 1068 mAh as a useable capacity is really a good result with significantly higher capacity than what the batteries are rated. In fact the performance of the 900 mAh Turnigy LSD is very close to the one provided by the 950 mAh Powerex Imedion LSD NiMH batteries that we’ve tested recently that also performed great. Increasing the load we test at and we still got great performance out of the Turnigy batteries, so they are great and affordable solution and the only problem is that you can only order these online from some of Hobby King’s warehouses in different countries.

The 1.2V AAA 950 mAh Powerex Imedion Rechargeable NiMH batteries are rechargeable batteries of the LSD type (Low Self Discharge) that are rated to retain up to 85% of their charge after 1 year of storage, unlike traditional NiMH batteries that will probably be completely discharged when stored for such a long period of time. The initial discharge capacity we got from these batteries was between 706 and 714 mAh with a low discharge current. Powerex is a brand of Maha Energy Corporation and is a well known brand among professional photographers for good quality batteries that are usually rated among the best and the same goes about the range of battery chargers that the company also makes. In fact we are using a MAHA Powerex C-9000 WizardOne Charger Analyzer as a part of our battery testing setup as we consider this to be one of the best AA/AAA battery chargers out there, so we do have very high expectations from these batteries.

We have started the test of the 1.2V AAA 950 mAh Powerex Imedion Rechargeable NiMH batteries as we normally do with a low constant current discharge rate of 0.1A and the result we got was 1062 mAh, or with a bit more than 100 mAh than the rated capacity. The great performance continues even after increasing the load all the way up to 1.0A where we still get 800 mAh as a useable capacity. As we expected the 1.2V AAA 950 mAh Powerex Imedion Rechargeable NiMH batteries do perform great by providing higher capacity than they are rated at and they manage to handle well in both low and high load applications.